{"id":204377,"date":"2025-05-29T08:16:34","date_gmt":"2025-05-29T00:16:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204377\/"},"modified":"2025-05-29T08:16:34","modified_gmt":"2025-05-29T00:16:34","slug":"python-%e5%b5%8c%e5%a5%97%e5%87%bd%e6%95%b0%e4%b8%ad%e5%a6%82%e4%bd%95%e8%ae%bf%e9%97%ae%e5%92%8c%e4%bf%ae%e6%94%b9%e5%a4%96%e5%b1%82%e5%87%bd%e6%95%b0%e7%9a%84%e5%b1%80%e9%83%a8%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204377\/","title":{"rendered":"Python \u5d4c\u5957\u51fd\u6570\u4e2d\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Python \u5d4c\u5957\u51fd\u6570\u4e2d\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\uff1f<\/h1>\n<p>IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aPython \u5d4c\u5957\u51fd\u6570\u4e2d\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241106\/1730853739672abb6b12555.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>python \u4e2d\u5d4c\u5957\u51fd\u6570\u5c40\u90e8\u53d8\u91cf\u9519\u8bef<\/strong><\/p>\n<p>\u5728 python \u4e2d\uff0c\u5d4c\u5957\u51fd\u6570\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u548c\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\u3002\u8fd9\u4f1a\u5bfc\u81f4\u610f\u5916\u9519\u8bef\uff0c\u4f8b\u5982 &#8220;\u672a\u7ed1\u5b9a\u5c40\u90e8\u53d8\u91cf &#8216;i'&#8221;\u3002<\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a<\/p>\n<pre>def f1():\n    i = 1\n    def f2():\n        i = i + 1<\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cf2 \u8bd5\u56fe\u8bbf\u95ee f1 \u7684\u53d8\u91cf i\u3002\u7136\u800c\uff0c\u89e3\u91ca\u5668\u5c06\u5176\u8bc6\u522b\u4e3a f2 \u7684\u5c40\u90e8\u53d8\u91cf\uff0c\u56e0\u4e3a python \u7684\u5c40\u90e8\u53d8\u91cf\u8986\u76d6\u89c4\u5219\u3002\u8fd9\u4f1a\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u4e3a i \u5728 f2 \u4e2d\u672a\u5b9a\u4e49\u3002<\/p>\n<p>\u8981\u89e3\u51b3\u6b64\u9519\u8bef\uff0c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528\u5217\u8868\u5bf9\u8c61\uff1a<\/strong><\/p>\n<p>python 2 \u4e2d\u7684\u8fd9\u4e2a\u9519\u8bef\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5217\u8868\u5bf9\u8c61\u6765\u89e3\u51b3\u3002\u7531\u4e8e\u5217\u8868\u5143\u7d20\u662f\u53ef\u53d8\u5bf9\u8c61\uff0c\u56e0\u6b64 f2 \u4e2d\u7684\u4fee\u6539\u5c06\u66f4\u65b0 f1 \u4e2d\u7684\u5217\u8868\u503c\uff1a<\/p>\n<pre>def f1():\n    i = [1]\n    def f2():\n        i[0] = i[0] + 1<\/pre>\n<p><strong>2. \u4f7f\u7528 nonlocal \u5173\u952e\u5b57\uff08python 3+\uff09\uff1a<\/strong><\/p>\n<p>\u5728 python 3 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u5f15\u5165\u4e86 nonlocal \u5173\u952e\u5b57\u3002\u5b83\u5141\u8bb8\u5d4c\u5957\u51fd\u6570\u76f4\u63a5\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\uff1a<\/p>\n<pre>def f1():\n    i = 1\n    def f2():\n        nonlocal i\n        i = i + 1<\/pre>\n<p>\u901a\u8fc7\u4f7f\u7528 nonlocal\uff0cf2 \u53ef\u4ee5\u76f4\u63a5\u4fee\u6539 f1 \u7684 i \u53d8\u91cf\u800c\u4e0d\u4f1a\u5f15\u53d1\u9519\u8bef\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPython \u5d4c\u5957\u51fd\u6570\u4e2d\u5982\u4f55\u8bbf\u95ee\u548c\u4fee\u6539\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python \u5d4c\u5957\u51fd\u6570\u4e2d\u5982\u4f55\u8bbf\u95ee&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204377","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204377"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204377\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}